Draft-regulating device for locomotives.



J. TROTTER.

DRAFT REGULATING DEVICE FOR LOCOMOTIVES.

Patented June 4i, Wm 3 SHEETQ-hHEET 1 APPLICATION FILED JULY 21. I916.

1L TROTTER. DRAFTBEGULATING DEVICE FOR LOCOMOTIVES.

APPLICATION FILED JULY 27,1916.

- Patented June 4,1918.

3 SHEETS-SHEET 2. 6 ;9- 40 Y J. TROTTER.

. DRAFT REGULATING DEVICE FOR LOCOMOTIVES.

' APPLICATION FILED JULY 27; H6. l fi@,3@@ Patented June 4, 1918.

45%Z7i v .ialvins rno'rrnn, or CHICAGO, ILLINOIS.

DRAFT-REGULATING DEVICE FOR LOCOMOTIVES.

To all whom it may concern:

Be it known that I, J AMES TROTIER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Draft-Regulating Devices for Locomotives, of which the following is a specification.

This invention relates to improvements in draft regulating devices for locomotives,a-nd one of the objects of the same is to provide an improved device of this character, by means of which a perfect draft condition and a uniform draft through all of the fines will be obtained, wherebyjan even depth of fire-bed will be maintained and the grate will be evenly covered throughout its entire area. j j j 1 j j A further object is to provide an 1mproved device of this character embodying a variable exhaust nozzle discharging into the stack and having means whereby the draft produced by the jet of exhaust steam from the cylinders will be at all times under the control of the engineer, so that the engineer may increase or decrease the velocity of the steam jet at will.

A further object is to provide .an improved device of this character embodying an exhaust nozzle and a defiector adjustably mounted in the nozzle and means whereby the deflector maybe adjusted at will to vary the size of space between the nozzle wall and the deflector and thereby vary. the velocity of the steam, whereby the draft on the fire will be at all times under the control of the operator.

I A further object is to provide improved means for arresting the sparks and cinders entrained by the steam asit isdischarged from the nozzle intothe stack.

To the attainment of these ends and the. accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arraiigement of the several parts hereinafter more fully described and claimed and illustrated in the accompanying drawings in which: i

Fi re 1 is a vertical lon 'tudinal sectiona view oithe treat end: o. a locomotive Specification of Letters Patent. Patented June &, 191$, Application filed nu a'z, 1916. Serial no. 111,548.

engine boiler constructed in accordance with theprinciples ofthis invention and as taken on line l-1, Fig. 2. I I

Fig. 2 is a sectional view as taken on line 2-2, Fig. 1.

Fig. 3 is a horizontal sectional view as taken on line 3+3, Fig. 1.

Fig. 4 is a vertical sectional view taken on line 44, Fig. 1. j Fig. 5 is a vertical sectional view as taken on line 5-5, Fig. 6, of the exhaust nozzle showing the deflector in position therein.

Fig. 6 is a sectional view taken on line 6-6, Fig. 5.

Fig. 7 is a top plan view of the parts shown in Fig. 5.

Fig. 8 is a detail perspective view of a portion of the deflector and the operating member therefor, the parts being separated.

Referring more particularly to the drawings and in thepresent exemplification of this invention, the numeral lO designates the smoke box or front end of a locomotive,

which may be of any well known construe tion and into which the fire tubes or fiues 11 dlscharge. Discharglnginto the smoke box 10 1s a nozzle 12 which is located in a direct linewith the stack 13, the latter communieating with the smoke box 10 in the usual manner. The exhauststeam from the engine cylinder is directed to the nozzle 12 in the ordinary and well known manner and is discharged from the nozzle directly into the stack.

An imperforate partition 14 is arranged within the smoke box in any suitable manner preferably by securing it along one edge 15 to the wall 16, just above the forward ends are deflected downwardly. The free end of the plate or table is supported in any suitable manner preferably by means of a cross bar 19 secured in position in any suitable manner, and the plate or table is provided with an enlarged opening or aperture 20 which is located above the end of the nozzle 12 and is of a diameter somewhat larger than the upper end 21 of the nozzle which end projects through the opening 20, so as to terminate a short distance above the plate 18. The free end of the plate or table extends forwardly beyond the nozzle 12 and terminates short of the forward end of the smoke box 10.

A suitable screen 22 in the form of a foraniinous plate extends across the smoke box with one end thereof secured to the free end of the table or plate 18 and the other end i prefe ab y secured to thetop of: the $2 0116 box 10 adjacent the forward end thereof. The artition 14, the plateor table 18and the screen 22 are so arranged as to divide the smoke stack into two compart, inents one. preferable above the other and secured adjacent the plate or table 18 in advance of the nozzle is a downwardly extending inclined baflie plate 23 which extends in a direction away from the nozzle and tenninatefi Short of thebottoin of the box. If desired the scree11'22 may be provided with removable section 24: which may be held in position in any desired or suitable manner,

Surroiinding the end of the nozzle 12 is a plate 25 which is provided with an aperture through which the end of the nozzle passes and this end may be provided with a flange or shoulder 27 against which theplate 25 rests. The plateis secured in position in any suitable manner preferably by means of fastening devices 28 Y which secure the plate to the plate 19.

This plate 25 is provided with perforations 3Q therethrough which perforations surround the end of the nozzle, and the area of the perforations 30 in the plate 25 is equal to the'area of the choke of the stack. 7 This perforated plate 25 vpermits a proper action of the draft onithe the through the medium of the perforations 30, which latter restrict the passage ofthe gases through the plate 18 and perforations 25. As a result a P01"? tion of the gases will be forced to travel around the front end of the smokebox 10 and through the screen 22, before they can be entrained into the stack 13. The screen 25 also prevents the oinders and sparks, whichhavc been drawn through the fines 11 from being carried directly into the stack 18 the steam or vapordischarged through the nozzle the steam fromthe cylinder discharges into the stack 13 the air in the smoke box will become rarefied and will be dif'awn up through thestack, thereby produfiillg a, draftthrough the pipes or fiues 11. Apet ticoat pipe 31' having a flanged lower ty 32 is adjustably secured 'to a suit- A pport 33am} is located intermediate at e no e12 and the stack 1 anclin a direct withth discharge "end of the nozzle so that the steam passin from the nozzle also passes through the pipe 31 before entering the stack. If desired an adjustable section 3-1 may be rovided on the pipe 31.

Arrange above the plate 18 and between the plate and the stack 13 is a chamber havingimperforate side and end walls 35, 36, the bottom of the chamber being formed by a portion of the plate 1 8 and the perforated plate 25. The top 37 of the chamber is provided with, an opening 38 having atilange therearound whichfiange telescopes with the bottom of the stack 13 so that the opening 38 will be in direct line withthenozzle 12 andthe stack 13. p p a p vThe side walls 35 a of the chamber are spaced for a considerable distance from the adjacent sides the smoke box, and a plate 40 having a portion thereof cut away isprovided so as to close the space between the chamber formed by the walls 35, 36, 37, and the bottom plate 18 to close said space to the passage of gases thereinto fromthe front of the smoke box. The cutaway portion of the plate 40 coincides with the opening 11 formed through the front wall of the chamber and this plate 4:0 is held in position in aiiy siiitable manner preferably by being sectifed to a flange 42 cohiiected to the wall of the smok'ebox. Thus it yvill be seen that when the smoke and gases fill the smoke box, the portion thereof which does not throughthe screen 25 will pass through the screen22 and be entrained into the stack 13.

In order that the'draft produced by the exhaust steam, be at all times under the cont'rol of the engineer, an adjustable ,d'eflector is provided anthis arrangecbwithin the end of the nozzle 12, near the mouth thereof and comprises two oomple nentary tapering sections 43, the side'sofwhich oyerl ap-to remit substantially hollow conical deflector, Theouter face ime deflector r nts the inner wall of the annular; Sana; passage and is substantially cohtinuous, am the s ace between the steem erui aefiector will closedagaiiist thepassage of steam tliei'ethrough in iiiiy position of the sections with res ect to other as the steam passes through the nozzle. One side the two sections are assembled, there \"rill' be formed an annular s ace 16 between the inner wall the eiit ensl on 21 of the nozzle and the oiiter face or periphery of the do fiector. The deflector is disposed within the nozzle and is spaced from the top of the nozzle so that an annular fcoliimn of steam will be maintained as the steam passes from thenozz'lb, p it will thus be seen that stem being disher ed lbin the 'zle 12 ll s r ke e deflector and be directed into the annular 13o space 46, and from the nozzle the steam will be discharged in a hollow column into the stack13.

By adjusting the sections of the deflector with respect to each other, thesize of the space 46 may be enlarged or decreased at the will of the operator and by theenlarging or decreasing of this space, the velocity of the steam jet which acts upon the fire may be varied, and while the velocity of the steam jet may be increased or diminished the area of entrainment will remain substantially the same. 1

Any suitable means may be provided for supporting and adjusting the sections 43 of the deflector. A simple and effective construction embodies a hollow shaft 47 which is journaled in a suitable bearing 48 and is provided with an extremity 49 which is angular in cross section and this extremity 49 passes into an angular opening 50 in a hub or enlargement 51 of the section 43. To the free end of the shaft 47 is connected an arm 52. These two sections 43 are constructed and supported in the same manner and operate in opposition to each other.

The shafts are supported by means of a tie rod 53 which passes through the shafts, hubs 51 and through the ends of the arms 52 and is secured in position by means of suiv able nuts 54 threaded upon the ends of the rod.

The arms 52 are arranged on the outside of the extension 21 ofthe nozzle and con nected with each of the arms is a link 55, the other end of the link being connected by a cross bar or lever 56. This lever 56 is in turn connected with an upright shaft 57 which is journaled at one end in a bearing 58 within the smoke box and passes through a suitable bearing 59, in the top of the smoke box. To the free end .of the shaft 57 is connected an arm 60 andthis arm 60 is connected with suitable operating mechanism arranged in a convenient position for the engineer.

With this construction, it will be noted that the shaft 57 when it is rotated will shift the lever 56 and as the ends of the lever move in opposite directions and are connected with the links 55, it will be manifest that the sections 43 of the deflector will be shifted toward or away from each other by the operation of the shaft 57, so that the engineer may vary at will the size of the annular space 46 and thereby vary the velocity of the steam jet.

What is claimed as new is:

1. An exhaust nozzle embodying a hollow body, and an expansible and contractible deflector for the steam arranged in the nozzle below the top of the nozzle and spaced from the wall thereof to form an annular passage for the steam, said deflector embodying coiiperating pivotally mounted sections, said sections being shaped to maintain a substantially continuous circumferential outer face, the space between the parts of the deflector being maintained closed against the passage of steam therethrough, in any position of the, parts with respect to each other. f j j i 2. An exhaust nozzle embodying a 1101- low body, an expansible and contractible deflector for the steam arranged within the nozzle below the top of the nozzle and spaced from the wall thereof'to form an annular passage for the steam, and means for expanding and contracting said deflector at will, said deflector embodying pivotally cooperating sections constructed to main tain a substantially continuous circumferen tial outer face, the space between the parts of the deflector being maintained closed against the passage of steam therethrough, in any position of the parts with respect to each other.

8. An exhaust nozzle embodying a hollow body, an expansible and'contractible deflector for the steam arranged within the nozzle below the top of the nozzle and spaced from the wall thereof to form an annular passage for the steam, and means for expanding and contracting said deflector at will from apoint remote from the nozzle, said deflector embodying cooperating pivotally mounted sections constructed to maintain a substantially continuous circumferential outer face, the space between the parts of the deflector being also maintained closed against the passage of steam there through in any position of the parts of the deflector with respect to each other.

4. An exhaust nozzle embodying a hollow body, and a deflector for the steam, arranged within the nozzleand 'belowthe top thereof, said deflector embodying two pivotally mounted complementary sections mounted for adjustment one with relation to the other and with respect to the nozzle, and forming with the wall of the nozzle an annular passage for the steam, said deflector being variable in size and embodying means for maintaining a substantially continuous circumferential outer face, the space between the sections of the deflector being maintained closed against the passage of steam therethrough during the passage of the steam through the nozzle.

5. An exhaust nozzle embodying a hollow body, and a deflector for the steam arranged within the nozzle below the top thereof and forming with the wall of the nozzle an annular passage for the steam, said deflector being variable in size and embodying two pivotally mounted complementary sections mounted for adjustment in opposition to each other, and means for adjusting the sections at will, said sections embodying means for maintaining a substantially continuous cii'ciimferen'tial ontcnfaoe to the deflector, and also for maintaining the space between the sections of the deflector closed against the passage of steam therethrough during the passage of the steam through the nozzle. 6. An exhaust nozzle embodyiii a hollow body and an adjustably mounted inverted fi'u'sto-conical shaped deflector for the steam, arranged ivithin the nozzle and below the top thereof, said deflector itself embodying pivotallv connected sections andbeing variable in size, said sections embodying means for maintaining theonter circumferential face of the deflector substantially continuous and tl'ie space between the parts ofthe deflector closed against the passage of steam therethrongh during the passage of the steam through the nozzle.

T. An exhaustnozzle embodying a hollow body, and an adjns'tably mounted inverted frusto-conical shaped deflector for the steam arranged Within the nozzle, said deflector embodying complementary sections pivotally connected for relative adjustment, t I 8. An exhaust nozzle embodying a hollow body, an adjustably mounted inverted frusto-conical shaped deflector for the steam arranged Within the nozzle, said deflector embodying complementary sections pivotally connected for relative adjustment, and means for moving the sections about their pivot from a remote point. i

9. An exhaust nozzle embodying a hollow body, an adjustably mounted inverted frusto-conical shaped deflector for the steam arranged Within the nozzle, said deflector embodying complementary sections pivotally connected for relative adjustment, and means for moving the sections about their pivot and in opposition to each other at Will.

'10. An exhaust nozzle embodying a hollow We dents 5? Washington,- I). 0,

lessees body, an adjustable inverted fconically shaped deflector for the steam arran ed Within andbelow the top of the nozzle, said deflector embodying complementary sections mounted for pivotal movement with respect to ea l othen and means for swingresections about their pivot toward mam ayiremeach other, at will.

ilgAn exhaustnozzle embodying a hollj body an adjustable inverted conically 5 ed deflector for the steam arranged i'vithinthe nozzle, said deflector embodying complementary sections mounted for pivotal iiovementwith respect to each other, a separate sli'aft detachably engaging; eaoh of said sections, a bearing for each of the shafts, means foi tying the shafts and sections together, and means for rocking the shafts to move the sections in opposition to each other. dd p d An exhau tn-ozzle embodying a hol lQW body, an adjnstableinyerted conically shaped deflector for the steam arianged Within the nozzle, said deflector embodying complementary sections mounted for pivotal movel'nent with respect to each other, a separate shaft detachahly engaging each of said sections, a bearing for each of the shafts, means for tying the shafts and section's together, and means for simultaneously rocking the shafts to move the sections relatively to each other at will and from a point remote from the nozzle. I

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses, on this 24th day July, 1k. D. V i H JAMES TROTTER. Witnesses t IiiMA M. 13mm, J. H. JocHnM, Jr.

addresses the ""'001hinis sienr a team, 

